Best sounding mufflers I heard are Mellowtone steelpacks from Brockman mufflers.
The original 50s Smithy's were packed with steel shavings, which gave them their reputation.
The glasspack repros today are very different and are much lighter with a tinny shell.
Last year I switched to Mellowtones 17" steelpacks which sound like tuned open pipes, rapping and cracking on deceleration like a true rod!
...If you have this post moved into the engine section by the moderator, you probably get more replies.
